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BEST AVAILABLE COP (No Modl.) 2 Sheehs8heet 1.

J. P. NYSTROM.

ORGAN STOP ACTION.

No} 395,503. Patented Jan. 1, 1889.,

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BEST AVAXLABLE COP J. P. NYSTROM.

ORGAN STOP ACTION. No. 395,508. Patented Jan. 1, 1889.

(No mo'ae 2 S-heetsSheet 2.

N. PETERS mun-m m Wnhmglon. u. c

BEST AVAlLABLE COP UNITED STATES PATENT OFFICE.

ORGAN STOP-ACTION.

SPECIFICATION forming part of Letters Patent No. 395,503, dated January 1, 1889.

Application filed June 27, 1888. Serial No. 278,312. (No model.) Patented in Sweden August 30, 1887, No. 1,556, and in Norway September 16, 1887, No. 650.

To all whom it may concern:

Be it known that I, JOHAN PETTEE N Thisinvention relates to improvements in organs; and the object of my invention is to provide certain new and useful improvements in the devices that controlthe passage of the air, by means of which the ton es can readily be regulated and controlled. The invention consists in the combination, with the organreeds, of a hinged tort-e lid or valve and additional hinged valves between the reeds and said forte-val\-'es.-

The invention also consists-in the combination and construction of parts and details, as will be fully described and set forth hereinafter, and pointed out in the claims.

In the accompam'ing drawings, Figure l is organ bellows provided with mv improvements Fig. 2 isa frontelevatiou ol' the same on a smaller scale, the forte-valve being removed.

Similar letters of reference ilulimllu (rmrw sponding parts.

Most all orgallsiu use luretol'ore havobeeu provided with a hinged lid or valve, E, of 'l ig. 1, by means of which the st-mnigth of tone could be governed. \Vhen said lid or valve is lowered, so'tha-t its cloth packing rests upon the bottom of the wind-chest, the air can only pass to the'reeds through the minute interstices of the cloth packing, whereby the soft and full normal tone is produced. \Yhcn the lid or valv'e E is raised, the passage of the air is unobstructed and the tone is greatly increased in force, even it it. loses some in quality. iehind the forte-lid E, I provide the additional lids or valves A 1- C I), which are in line and close tightly against the actuatinglevers and are provided with soft-cloth packseparated by thin partitions F, G, and H.

The said lids or valves are provided on their bottom edges and ends with leather packin \Vhen, for example, the lid or valve C, Fi 1, is lowered into the position shown in dotted lines, a small space remains between the inner side of said lid and the front of the reedhole, said space being of triangular form in cross-section and uniting or bringing in communication with each other all the reed-holes situated behind said lid or valve. In alike manner all the reed-holes behind any other lid or valve are united or brought in commun i cation when said other lid or valve is lowered.

The lids or valves A B C D are to be raised or stand open when tones of normal strength shall be produced. In case a diminuendo is desired in any part of the bass or treble,

the correspondinglid is lowered gradually until closed, whereby the tTm-ee of the tone is decreased to the very faintest: pianissimo, resen'iblingav distant echo. The cause of this effect is, in the first:- place, tl'ia-t the packing of the lids A ll 0 I) is much tighter than the paclaiu of the lid E. l urthermore, the lids A l, U l) a re placed close to the reed-holes, so that, as above mentioned, only a very narrow i passage is lirovided for the air to reach the a transverse sect-ion of the wiml-clu-stirt' an 5 reeds that areopmi. Flu-strength 0tthe tone thus depmuls upon the size ol the triangular space. in case the lids are so hung as not to form any triangular space whatever in front 3 of the reeds, said lids act as soumlanutliers I and dt-adcn the sound altogether.

in Macon!" theiour lids or valves described two can be used, the partitions F and H being removed, so that the lids A and B form one of the valves and C and 1'.) the other. We

then have the lid. or valve A ii for producing the piano effect in the. bass and the lid C l) for the same purpose in the treble. it-h both of these lids, which can be manipulated separately, and with the lid E the following and treble can be produced:

ings for said levers. At their; ends they are i all of which combination can be properly vcoinbinations of strength of the tones in bass ioo shaded by moving the lids more or less from the stops.

As shown in' Fig. 2, four lids are used, which permit of a still greater number of eombinations of tones. These lids are to be held open by springs. The lid or valve A is provided at one end with a clip, I, projecting over the edge of the lid or valve B, so that when the lid or valve A is lowered it presses down the lid or valve 1' but when the lid or valve B is lowered it does not necessarily lower the lid or valve A. A like clip, K, is secured to the lid or valve D and projects over the lid or valve 0. lVit-h this arrangement piano can be produced in the middle register by a single operation. g I

To produce piano-tones on the middle register, the valves B and C are lowered; for the treble the lids (J and D are lowered; for the treble and middle register the lids B, (Land D are lowered; for the bass the lids A and B are lowered; and for the b ass and middle register the lids A, B, and C are lowered. The

angle-lei'er L has one end connected with the lid or valve A, and the other is adjacent to the knee-lever Q. The lever P has one end connected with the lid or valve D and the other end adjacent to the knee-lever T. In case it is desired to manipulate the organ with two inner valves only, these levers are used, as by pressing the knee-lever Q. outward the lids A and B are lowered at the same time, and by pressingthe knee-lever T the lids C and D are lowered at the same time, the player be ing thus enabled to produce piano in bass or treble, or both, at the same time. The angle-lever O has one end connected with the two lids B and C, and .the other end is adjacent to the knee-lever S, the said knee-lever S being set back slightly. By moving the knee inward and then pressing on the kneelever S, the lever O is manipulated in such a manner as to close the valves B and C and produce piano-tones in the middle registers. The angle-levers M and N, which are connected with the forte lid or valve E, are located at opposite sides of the knee-lever R,

which can swing to the right or left, so that 395,503 BESTAVAILABLE cos either knee can be used for raising the forte lid orvalve that is to say, the knee that is not engaged in holding down a piano'lid or valve in the bass or treble can be used for raising the forte-valve.

Having thus described my invention, I claim as new and desire to secure by Letters Patentr- 1.' In an organ, the combination, with a sc ries of organ-reeds in a single .row divided into groups, a lid or valve hinged in front of each group, levers for operating the lids or valves, and aforte lid or valve pivoted to the wind-chest extending in front of theent-ire row of reeds and the hinged lids or "alves of the same, substantially as set forth.

2. In an organ,-the combination, with a series of organ-reeds divided into groups, a hinged lidbr valve in front of each group of reeds, transverse partitions between the ends of the lids or valves, a forte lid or valve extending along the wind-chest in front of the 3. In an organ, the combination, with a series of organ-reeds divided into groups, of a lid or valve hinged .in. front of each group, clips secured on the ends of same and extendi n g over upon the ends of the adjacent lids, and angle-levers for operating said lids or valves, substantially as herein shown and described. Y

. l. In an organ, thecombination, with a series of reeds,-of a hinged lid or valve in front of the reeds, an angle-lever, the upper end of which isconnected with a lid or valve, and a swinging knee-lever at the side of the lower shank of said angle-lever but independentof the same, whereby, by pressing on the kneelever, the angle-lever is operated, substantially as set forth.

In testimonywhereof I affix my signature in presence of two witnesses.

J OHAN PETTER NYSTROM. Witnesses:

ADOLF JosEFsoN, C. G. J ANSON. 

